Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
28 + 10 = ______
20 + 20 = ______
80 − 10 = ______
68 + 20 = ______
64 − 10 = ______
46 − 10 = ______
42 + 10 = ______
6 × 10 = ______
8 × 10 = ______
9 × 10 = ______
57 + 10 = ______
75 + 10 = ______
87 + 10 = ______
1 × 10 = ______
3 × 10 = ______
32 + 10 = ______
53 − 10 = ______
61 + 20 = ______
43 + 20 = ______
28 + 20 = ______
